# How to achieve this clipping like OpenGL dose?

**URL:** https://discourse.vtk.org/t/how-to-achieve-this-clipping-like-opengl-dose/8941
**Category:** Support
**Created:** [July 13, 2022, 1:36am UTC](https://discourse.vtk.org/t/how-to-achieve-this-clipping-like-opengl-dose/8941 "2022-07-13T01:36:37Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![xxyyy159](https://discourse.vtk.org/user_avatar/discourse.vtk.org/xxyyy159/32/4528_2.png) [@xxyyy159](https://discourse.vtk.org/u/xxyyy159)
#### Post date: [July 13, 2022, 1:36am UTC](https://discourse.vtk.org/t/how-to-achieve-this-clipping-like-opengl-dose/8941/1 "2022-07-13T01:36:37Z")

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Hi all,  
I find an interesting blog showing the way clipping the iso surface like below.

![image](https://discourse.vtk.org/uploads/default/original/2X/b/b4453a846d994ff8fb797b27916e6570a49ee316.png)

[blog source](http://glbook.gamedev.net/GLBOOK/glbook.gamedev.net/moglgp/advclip.html)

Can VTK do this ?

Actually, I’m using unstructured grid to achieve the same effort, but way more source consumption.

If you have any hints, pls let me know.

Thanks.

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### Author: ![Paulo\_Carvalho](https://discourse.vtk.org/user_avatar/discourse.vtk.org/paulo_carvalho/32/370_2.png) [@Paulo\_Carvalho](https://discourse.vtk.org/u/Paulo_Carvalho)
#### Post date: [July 18, 2022, 10:10pm UTC](https://discourse.vtk.org/t/how-to-achieve-this-clipping-like-opengl-dose/8941/2 "2022-07-18T22:10:34Z")

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Hello,

Can you post the scene-building code you’re using? What do you mean by “more source consumption”? What do you consider an acceptable resource consumption?

regards,

Paulo